Multiple drill.



C. H. OSLUND.

MULTIPLE DRILL,V APPLIOATION FILED 1120.26, 1906.

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manned Apr. 27, 1909.

G. H. OSLUND.

MULTIPLE DRILL.

APPLIOATION FILED 1330.26. 190e.

Patented A111227, 1909.

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C. H. OSLUND.

MULTIPLE DRILL.

WITN ESSES C. H. OSLUND.

MULTIPLE DRILL.

nrmonrox num nno. 2a.4 190s. 920,080. Patented Apr. 27; 1909.

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MULTIPLE DRILL.

APPLIUATION IILED DEO. 26. 1906.

' Patented Apr. 27, 1909.

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CHARLES OSLUND, OF WORCESTER, MASSACHUSETTS.

MULTIPLE DRILL.

To all whom it may concern:

Be it known that I, CHARLES H. OsLUND, of Worcester, 1/Vorcester county, Massachusetts, have invented a new and useful Multiple Drill, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which` Figure 1 is a plan view showing a multiple spindle drill constructed in accordance with my invention; FiO. 2 is a side elevation of the same, partly roken away to show the ratchet wheels and gearing; Fig. 3 is a side elevation of a portion of the apparatus showing the rail-clamping device; Fig. 4 is a sectional end view on the line IVIV of Fig. 1 showing the ratchet feeding the spindles and Fig. 5 is view on the line VV of Fig. 1 showing the gearing for rotating the spindles Fig. 6 is a plan view of the drill spindles and shafts showing the arrangement of the gearing thereon and the relation of the gears with each other; Figs. 7 and 8 are diagrammatic views showing a modification in the arrangement of the gearing for a four spindle machine and Figs. 9 and 10 are similar diagran'imatic views showing the arrangement of the gearing for a single spindle machine.

My invention relates to multiple spindle or ang drills and it more particularly relates to and operated ratchet drills used in drilling holes for terminal' stud bonds in the rails of railway track.

The invention further relates to the arrangement of ratchet operated gearing for turning drill spindles on either single or multiple spindle machines.

In the drawings, 2 represents the frame or carriage of the apparatus which is mounted so as to be longitudinally movable on the rods or slides 3, suitable bearings 4 being provided on the frame for this purpose. The outer ends of the rods 3 are secured to the yoke 5 by the nuts 6 and the opposite ends of the rods 3 are connected together by means of the bar or separator 7, this bar being secured to the rods by the bolts 8, these bolts also serving to fasten the rods 3 to the rail clamping device.

Mounted in bearings on the frame 2 are the drill spindles 9, 10, 11 and 12 and also the intermediate driving shafts 13, 14 and the ratchet wheel shaft 15. The drill spindles 9 and 12 have spur gear wheels 9a, 12a which are in mesh with and are rotated by Specification of Letters Patent. Application filed December 26, 1906.

mechanism for a sectional end Patented April 2'7, 1909. serial No. 349,447.

l the wide faced spur gears 13, 14a located l respectively on the intermediate driving l shafts 13 and 14. 0n the spindles 1() and 11 I are spur gears 10a, 11u which wheels mesh l with and are rotated by the spur gears 13b and 14b which are also located on the intermediate driving shafts 13 and 14. Thespinl dles 10 and 11 also have spur wheels 10b and 11b which are in mesh with and are rotated by the spur gear 15b formed integral with the ratchet wheel 15 d which turns on the ratchet wheel shaft 15. Also mounted so as to rotate on the shaft 15 is the ratchet wheel 15C which is formed integral with the spur gear 15, the wheel 15a meshing with and rotating the spur gears 13a and 14L on the intermediate shafts 13 and 14. Located on the ratchet shaft 15, which is held in place on the frame 2 and is prevented from turning bolt 16 is the ratchet lever 17 having the ratchet pawls 18 and 19, which pawls engage with the oppositely facing teethin the ratchet wheels 15", .15i and cause them to rotate when thehand lever 17 is moved back and forth by the operator.

Each drill s indle is provided on one of its ends with a liall bearingl 20 by means of which the friction caused by the end thrust put upon these spindles in the drilling operation. is reduced. The outer ends of the s indles have sockets in which sockets the Shanks of the drills are inserted. Provision is made for adjusting the drills in their sockets by means' of the clamps or kee ers 22 which are inserted in the transverse s ots extending through the spindles, and which engage with the knurled adjusting nuts 23 on the threaded portion 23 of each s indle. ln order to retain each drill in its spin( le and prevent its being withdrawn from the socket y the backward movement of the frame 2 on the slides 3, the drills are provided with grooves or slots 21 and into these grooves the tongue 24 and set screw 25 on the keeper 22 are inserted after the drill 21 has been placed in its socket in the spindle.

Secured to the outer end of the frame 2 is a bracket bearing 26 and rotatably mounted in this bearing is one end of the threaded feed screw 29 by which the frame 2 is moved longitudinally on the slides 3. On this feed screw 29 is a ratchet wheel 30 which turns the feed screw when the ratchet is actuated by the ratchet pawls 31, 31 located on the ends 13', 14 of the intermediate driving shafts 13 and 14.

The outerend of the feed screw 29 projects through the feed screw nut 32 on the yoke 5 and on the endr of. this feed screw is a hand wheel 33 bj means of which the frame 2 is retracted and is moved forward on its slides 3 when the pawls 31 are thrown out of engagement with the teeth of the ratchet wheel 30 by the plate l34 provided on the feed screw 29for this purpose. rlhe plate 34 is slightlv larger in diameter than the ratchet wheel 30 and is provided with cut awajT portions 34L so as to permit the teeth of the ratchet Wheels 30 to he engaged with" t`he pawls 31 to turn these wheels when the ratchet feed is in use. The ends of the intermediate shafts 13 and 14 have rcduced portions 13l and 14 which are eccentric with the axis of its shaft and the feed screw ratchet pawls 31 are located on these eccentric portions of these shafts.

Clamping jaws are provided by means of which the apparatus is secured to the rail to be drilled, the fixed jaws 35 being secured to the slides 3 by the bolts 3. he movable jaws 37 are movably mounted on the extensions 36 on the 'fixed jaws 35. The extensions 36 have threaded portions on which the nuts 33 turn, to clamp the jaws on the rail A during the drilling operation. To keep the jaws 37 in position on the extensions 36 and prevent their turning with the nuts 38 on the extensions 36, splines or feather keys 39 are placed on these extensions, which engage with the sides of the key-ways 40 in the movable clamping jaws.

On each of the clamping jaw extensions 36, is a thumb-screw 41 for the purpose of adjusting the distance from the top of the rail being drilled to the horizontal center line of the drills and the thumb-screws are held in their adjusted position by the locking nuts 41 on these thumb screws. .The depth to which the holes are drilled in the rails is shown by the relation with a suitabljT located mark on one of the slides 3 of the point of the adjustable indicator 42 which is held in place on the frame 2 by the thumbscrew 43.

1n Figs. 7 and S a modification in the arrangement of the gearing for a four spindle drill is shown, in which the gears 44, 45, 46 and 47 are located on the drill spindles, the wheels 44 and 45 meshing with the idler wheels 48 on one of the intermediate shafts and the gears 46 and 47 meshing with a similar idler wheel 49 on the other intermediate shaft. The wheels 4S and 49 both mesh with the wheel 50 which is located on the ratchet shaft and is provided with ratchet teeth 50a. A similar wheel 51 having ratchet teeth 5 a which face in the opposite direction to the ratchet teeth 50EL on the wheel 50 is also located on the ratchet shaft, this wheel 51 meshing with the wheels 45. and 46 and also driving, through the gears 45and j spindle,

l l l 46 and the idler wheels 48 and 49, the spindle located gears 44 and 47.

Figs. 9 and 10 show the gearing as arranged drive a ratchet drill having a single drill in which 52 represents the gear wheel which. is secured on and causes the spindle to rotate, and 53 is an idler gear meshing and rotating with the spindle gear 52. Mounted on the ratchet shaft on which the hand lever is` placed, are the ratchet gears 54 and 55, these wheels hav'ng ratchet teeth 54a, 55ii formed integral with the wheel 54 and wheel 55, the faces of the ratchet teeth facing in. opposite directions when the wheels are assemhled in place on the ratchet shaft. The spindle gear 52 is in mesh with and is rotated hy the ratchet gear 54, when this wheel is caused to move bjr the ratchet hand lever (not shown) through its ratchet pawl .in engagement with the ratchet teeth 54aV on the gear54. vhen the hand in the opposite direction, a pawl on the hand lever engages with the ratchet teeth 55L on the gear 55 and in turning the gear 55 whicl'i is in mesh with the gear 53 through the gear 53, causes the spindle gear 52 to rotate.

From the above it will he seen that the spindle gear 52 is caused to rotate always in the same direction, by means of a hand lever, having oppositelv facing ratchet pawls through the oppositely rotating ratchet wheels 53 and 54 which are in mesh with the gears 52 and 53.

1n the operation of the apparatus, the machine is secured to the rails A by means of the clamping jaws 35 and 37 rEhe drills 21 are then inserted in place in the sockets of the spindles 9, 10, 11 and 12 and after being secured in the spindles by the keepers 22, the drills are adjusted lengthwise in the sockets, by means of theknurled adjusting nuts 23 so as to bring tie cutting end of each drill in line with the others. The drills are preferabljT ladjusted in their sockets before the machine is secured to the rail to he drilled.

After the drills are adjusted and the apparatus secured in place on the rail, the operator then moves the frame 2 forwardly on the slides 3 by means of the hand wheel 33 on the feed screw 29 until the drills 21 are `in contact with the rail A. The hand lever 17 is then moved back and forth onV the ratchet shaft 15, and the pawls 18 and 19 on this lever bv engagement with the ratchet wheels 15C and 15d turn the drills through the connecting gearing. W hen the hand lever 17 is moved so as to rotate the ratchet wheel 15C by the awl 18, the-gear 15L rotates the intermediate shafts 13 and 14 through the gears 13a, on these shafts. rllhese shafts the spindles 9 and 12L to rotate 92L and 12a which are in mesh with the gears 13a and 14a. The same movement of the shafts 13 and 14, through the gears-,13b and 14h, rotates the 14a, located in turn cause through the spindle gears lever is moved Y spindles 10 and 11 through the spindle gears l 10a and 11a. l en the lever 17 is moved in the opposite direction the pawl 19 engages with the teeth in the ratchet wheel 15d and through it rotates the gear 15b. The wheel 1 b mes es with and rotates the gears 10b l and 11b on the spindles 10 and 11.

hen t moved by t 11 by said drill spindles and an oscillating l the ratchet shaft having pawls for actuating the ratchet opposite directions to rotate the spindles; substantially as described. e spindle gears 10b and 11b are 2. multiple spindle drill comprisin a he wheel 15b, the spindles 10 and plurality of drill spindles, a driving shaft havmeans of the gears 1()a and 11a which ing gear connections with part of said spinwith the gears 13b, 14h cause the dles, a ratchet shaft, shafts 13 and 14 to rotate, these shafts l ratchet shaft having gear connections with through the gears 13a and 14 inv turn rotatthe driving shaft, ing the spindle gears 9"L and 12a and through said ratchet shaft havino' gear connection them the spindles 9 and 10. remainder of said drill spindles and s t e intermediate shafts 13 and 14 are an oscillatingleveron theratehetshafthaving turned in the dri ling operation, the ends 13 and 14 of these shafts which are reduced eccentrically he axis of the shaft, e 1pawls 31, 81 to reciprocate, and paw s by engagement with the teeth in the ratchet wheel 30 automatically turn the feed screw 29 in the fee screw nut on the yoke 5 spindle drill having a pluso as to positively feed the frame 2 forward I rality of drill spindles, a driving shaft having lides 3. When it is desired to throw gear connection with of said spindles, a the pawls 31, 31 into their inoperative posiratchet shaft, a ratchet wheel rotating' on the tion, the plate 34 is moved on the screw 29 so ratchet shaft aving gear connection with as to shift the position of the cut-away porthe driving shaft, a second ratchet wheel rotions 311El and bring the edge of this plate into tating and lift the pawls and hold the operator.

e advantages. of my invention will be apparent to those'skilled in th feed-screw for moving the spindles longitudinally, a ratchet wheel on said feed-screw, pawls operated by the driving shaft for rotat- O and a hand wheel by is provided, in which the be rotated to adby each forward and each kward stroke of the hand lever. By the use of the gearing as shown the spindles of a multiple drill can be located so as to ermit oles being drilled very closely toget er at one operation. e mechanism is simple and is easily kept in repair.

Variations in the construction and arrangement ofthe parts may be made within e scope of my invention. T e number of spindles employed may be changed, as the one or more her changes may be mad without departing from my claim r- 1. A multiple spindle drill comprising a l plurality of drill spindles, la driving shaft having gear connections with part of said spindles, ratchet wheel on the ratchet shaft having gear connections with of the ratchet wheel on said feed-screw, substantially as described.

multiple spindle drill comprising a iill spindles, a driving shaft havthe spindles, a ratchet shaft, a ratchet wheel on the ratchet shaft having gear connections with the driving shaft, a second ratchet wheel having gear connections with the spindles and means on the ratchet shaft for actuating' said ratchet wheels and driving said spindles; substane f tially as described. invention. n testimony whereof, I have hereunto set f my hand.

CHARLES H. OSLUNT).

Witnesses A CHAs. R. S'rURDnvAN'r, WM. A. BACON. 

